4,059 research outputs found
Tunable asymmetric magnetoimpedance effect in ferromagnetic NiFe/Cu/Co films
We investigate the magnetization dynamics through the magnetoimpedance effect
in ferromagnetic NiFe/Cu/Co films. We observe that the magnetoimpedance
response is dependent on the thickness of the non-magnetic Cu spacer material,
a fact associated to the kind of the magnetic interaction between the
ferromagnetic layers. Thus, we present an experimental study on asymmetric
magnetoimpedance in ferromagnetic films with biphase magnetic behavior and
explore the possibility of tuning the linear region of the magnetoimpedance
curves around zero magnetic field by varying the thickness of the non-magnetic
spacer material, and probe current frequency. We discuss the experimental
magnetoimpedance results in terms of the different mechanisms governing the
magnetization dynamics at distinct frequency ranges, quasi-static magnetic
properties, thickness of the non-magnetic spacer material, and the kind of the
magnetic interaction between the ferromagnetic layers. The results place
ferromagnetic films with biphase magnetic behavior exhibiting asymmetric
magnetoimpedance effect as a very attractive candidate for application as probe
element in the development of auto-biased linear magnetic field sensors.Comment: 5 figure
Guia prático para a implantação de sistemas de pastejo rotacionados para gado de corte.
bitstream/CPPSE/15939/1/PROCIDoc43PMS2005.00188.pd
Manejo de pastagens tropicais.
Definição de alguns termos técnicos; Massa e acúmulo de forragem; Oferta ou disponibilidade de forragem; ResÃduo pós-pastejo; Taxa de lotação animal; Eficiência de pastejo; Seleção; Pastejo (ou ocupação) contÃnuo e pastejo rotacionado; Pastejo rotacionado com dois lotes de animais; Lotação (ou carga) fixa e variável; A planta forrageira; Manejo de pastagens; Pastejo rotacionado; Implantação do sistema de pastejo rotacionado.bitstream/CPPSE-2010/19151/1/PROCIDoc46PMS2009.00415.pdf2. ed. rev
Manejo e utilização de plantas forrageiras dos gêneros Panicum, Brachiaria e Cynodon.
bitstream/CPPSE/14934/1/PROCIDoc34LAR.2003.00202.pd
Irrigação de pastagens formadas por gramÃneas forrageiras tropicais
bitstream/item/37269/1/Circular48.pd
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